As the leader in water-based sealant technology, Tower Sealants has developed a new line of sealants that meets the rigid requirements of ASTM C-920. Tower Tech 2 is a one-component, high performance, gun-grade, urethane-modified acrylic sealant that offers unsurpassed flexibility and adhesion.

Use this 100% silicone rubber sealant for sealing cracks and gaps around windows, doors, plumbing openings, vents and ducts when you need a watertight, flexible seal that is resistant to sunlight, rain, snow and extreme temperatures (-60°F to 400°F).

Use this 100% silicone rubber sealant for sealing cracks and gaps around windows, doors, plumbing openings, vents and ducts when you need a watertight, flexible seal that is resistant to sunlight, rain, snow and extreme temperatures (-60°F to 400°F).